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Persistent effects on bovine granulosa cell transcriptome after resolution of uterine disease

ABSTRACT: Persistent effects on bovine granulosa cell transcriptome after resolution of uterine disease

PROVIDER: PRJNA528510 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8767280_1.fastq.gz	Fastqsanger.gz
	SRR8767280_2.fastq.gz	Fastqsanger.gz
	SRR8767281_1.fastq.gz	Fastqsanger.gz
	SRR8767281_2.fastq.gz	Fastqsanger.gz
	SRR8767282_1.fastq.gz	Fastqsanger.gz

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Persistent effects on bovine granulosa cell transcriptome after resolution of uterine disease

Project description:Metritis is associated with reduced fertility in dairy cows, but the mechanisms are unclear because the disease resolves several weeks before insemination. One hypothesis is that metritis causes persistent changes in granulosa cells during follicle development, which might be evident in the transcriptome of granulosa cells from dominant follicles weeks after parturition. To test this hypothesis we collected follicular fluid and granulosa cells from dominant follicles 63 days post partum from cows previously diagnosed with metritis, at least 6 weeks after resolution of the disease, and from cows not diagnosed with metritis (control cows). Bacterial lipopolysaccharide was detected in follicular fluid, and concentrations were associated with follicular fluid IL-8 and glucose concentrations. Transcriptome analysis using RNAseq revealed 177 differentially expressed genes in granulosa cells collected from cows that had metritis compared with control cows. The most upregulated genes were ITLN1, NCF2, CLRN3, FSIP2 and ANKRD17, and the most downregulated genes were ACSM1, NR4A2, GHITM, CBARP and NR1I3. Pathway analysis indicated that the differentially expressed genes were involved with immune function, cell-cell communication, cell cycle and cellular metabolism. Predicted upstream regulators of the differentially expressed genes included NFκB, IL-21 and lipopolysaccharide, which are associated with infection and immunity. Our data provide evidence for a persistent effect of metritis on the transcriptome of granulosa cells in ovarian follicles after the resolution of disease

2019-03-22 | GSE128697 | GEO

Persistent effects on bovine granulosa cell transcriptome after resolution of uterine disease.

Project description:Metritis is associated with reduced fertility in dairy cows, but the mechanisms are unclear because the disease resolves several weeks before insemination. One hypothesis is that metritis causes persistent changes in granulosa cells during follicle development, which might be evident in the transcriptome of granulosa cells from dominant follicles weeks after parturition. To test this hypothesis, we collected the follicular fluid and granulosa cells from dominant follicles 63 days post partum from cows previously diagnosed with metritis, at least 6 weeks after resolution of the disease and from cows not diagnosed with metritis (control cows). Bacterial lipopolysaccharide was detected in follicular fluid, and concentrations were associated with follicular fluid IL-8 and glucose concentrations. Transcriptome analysis using RNAseq revealed 177 differentially expressed genes in granulosa cells collected from cows that had metritis compared with control cows. The most upregulated genes were ITLN1, NCF2, CLRN3, FSIP2 and ANKRD17, and the most downregulated genes were ACSM1, NR4A2, GHITM, CBARP and NR1I3. Pathway analysis indicated that the differentially expressed genes were involved with immune function, cell-cell communication, cell cycle and cellular metabolism. Predicted upstream regulators of the differentially expressed genes included NFκB, IL-21 and lipopolysaccharide, which are associated with infection and immunity. Our data provide evidence for a persistent effect of metritis on the transcriptome of granulosa cells in ovarian follicles after the resolution of disease.

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Palmitoylated proteins in bovine granulosa cells

Project description:The palmitoyl-proteome of bovine granulosa cells (GC) cells was investigated by combining acyl-biotin exchange chemistry and quantitative mass spectrometry analysis.

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Uterine infection alters bovine endometrium, oviduct and granulosa transcriptome three months later

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Uterine infection-induced transcriptomic changes in the bovine endometrium

Project description:Purpose: Perform RNA-seq study on infectious bovine endometrial tissues to reveal important genes and biological pathways regulating uterine physiology following uterine infections Methods:RNA sequencings were done using Illumina platform. Single-end reads in the FASTQ format were explored using FastQC, low-quality reads were trimmed from both 3’ and 5’ ends until a base pair of Phred quality score of 30 (99.9% accurate) or greater was found, reads having a mean quality score less than 30 and length below 30 nucleotides were filtered out. Cleaned reads were aligned against the bovine reference genome (Bos_taurus.ARS-UCD1.2) using HiSAT2. The resulting SAM files were sorted, converted to BAM files using SAMtools. Read counts mapped to bovine gene models were generated using htseq-count script from HTSeq package. Bioconductor DESeq2 was used to get the differentially expressed genes among infectious vs normal uterine tract groups Conclusions: The study demonstrated that uterine infections altered several genes and pathways related to inflammatory response, immune response, uterine physiology, uterine enviroment and fertility in the intercaruncular region of bovine endometrium.

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Project description:Granulosa cells mature and die as ovarian follicles enlarge and die (undergo atresia) under the influence of hormones and intrafollicular factors. Later in follicular development, a fluid-filled antrum is formed, a process which is accompanied by a high rate of atresia. These small antral follicles (5 mm or less in diameter in the cow) contain granulosa of 2 different phenotypes, rounded or columnar, whereas follicles larger than 5 mm have the rounded phenotype only. Prior to ovulation, in larger follicles greater than 10 mm in size, the granulosa begin to migrate and differentiate in preparation for oocyte release and formation of the corpus luteum. These two key phases of follicular development were studied by gene expression microarray analysis using a bovine model to dissect the molecular mechanisms underlying these processes. Four groups of bovine ovarian follicles were selected for analysis. Follicle size, type and array number for each group are as follows: small (3-5 mm) healthy rounded (n=5), small healthy columnar (n=5), atretic (n=5) and large healthy (>10 mm; n=4). For each group, the RNA from a single follicle was used to hybridise an array, except for 3 small healthy samples which were pooled from 2 follicles each due to low RNA.

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Granulosa cell gene expression profiling of bovine cohort, dominant and subordinate follicles

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